Particulate matter and hospital admissions for stroke in Beijing, China: modification effects by ambient temperature

Huang, Fangfang, Luo, Yanxia, Guo, Yuming, Tao, Lixin, Xu, Qin, Wang, Chao, Wang, Anxin, Li, Xia, Guo, Jin, Yan, Aoshuang and Guo, Xiuhua (2016) Particulate matter and hospital admissions for stroke in Beijing, China: modification effects by ambient temperature. Journal of the American Heart Association, . doi:10.1161/JAHA.116.003437


Author Huang, Fangfang
Luo, Yanxia
Guo, Yuming
Tao, Lixin
Xu, Qin
Wang, Chao
Wang, Anxin
Li, Xia
Guo, Jin
Yan, Aoshuang
Guo, Xiuhua
Title Particulate matter and hospital admissions for stroke in Beijing, China: modification effects by ambient temperature
Journal name Journal of the American Heart Association   Check publisher's open access policy
ISSN 2047-9980
Publication date 2016-07-13
Year available 2016
Sub-type Article (original research)
DOI 10.1161/JAHA.116.003437
Open Access Status DOI
Total pages 12
Place of publication Hoboken, United States
Publisher Wiley-Blackwell Publishing
Collection year 2017
Language eng
Formatted abstract
Background The impact of particulate matter (PM) on stroke may vary by particle size, stroke subtype, and patient characteristics and temperature. We examined the association of stroke admissions with PM in different subgroups in Beijing, China, during 2013–2014.

Methods and Results A time‐stratified case‐crossover design was used to assess the relation between PM of different particle sizes and hospital admissions for ischemic and hemorrhagic stroke. Stratified analyses were performed by age, sex, and temperature. In total, there were 147 624 stroke admissions during the study period. In the whole‐period analysis, both PM2.5 and PM10 were positively associated with ischemic stroke admissions on the day of hospital admission and negatively associated with ischemic stroke at lag2 and lag3 day. In warm days (>13.5°C), the odds ratios of ischemic stroke admissions were 2.071 (95% CI 1.959–2.190), 1.470 (95% CI 1.391–1.554), and 1.590 (95% CI 1.493–1.694) per IQR increase in the same‐day PM2.5 (82.0 μg/m3), PM2.5–10 (36.6 μg/m3), and PM10 (93.5 μg/m3), respectively. For hemorrhagic stroke, the corresponding values were 1.941 (95% CI 1.658–2.273), 1.590 (95% CI 1.366–1.851), and 1.527 (95% CI 1.278–1.826). The positive associations were also observed in the other lag structures and were higher than in cold days (≤13.5°C).

Conclusions This study suggests that the associations of PM2.5, PM2.5–10, and PM10 with stroke admissions differed across levels of temperature. Short‐term exposure to PM2.5, PM2.5–10, and PM10 was positively associated with hospital admissions for ischemic and hemorrhagic stroke on warm days (>13.5°C).
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: HERDC Pre-Audit
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Created: Sat, 16 Jul 2016, 15:12:15 EST by Yuming Guo on behalf of School of Public Health